When someone looks at a new love, the neural circuits that are usually associated with social judgment are suppressed.
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In medieval Italy, if a man was caught kissing a woman in public, he had to marry her whether he liked it or not.
456
Approximately 141 million Valentine's Day cards are exchanged worldwide every year.
104
In 2011, archaeologists discovered the skeletal remains of a Roman couple who have been holding hands for 1,500 years.
81
Couples' personalities converge over time to make partners more and more similar.
235
In 2012, a Chinese man named Xiao Fan had a dress made out of 9,999 red roses for his girlfriend and then proposed - 9 in China means forever
16
One in five long-term love relationships began with one or both partners being involved with others.
177
Close to 110 million roses (mostly red) will be purchased and delivered around Valentine's Day in the U.S.
88